Numbers

Transcendental numbers can be bounded so that the true value is guaranteed to lie within the interval. For the predefined floating point numbers in std::numbers, we provide the smallest floating point interval that still contains the number.

auto pi = cu::numbers::pi_v<cu::interval<double>>;

It allows the use of std::numbers in generic code.

#include <numbers>
#include <cuinterval/cuinterval.h>

template <typename T>
__device__ T area_of_circle(T r) {
    return std::numbers::pi_v<T> * r * r;
}
// usage (inside kernel)
auto area = area_of_circle(cu::interval<double>{2.0});
//   area = [12.566370614359172, 12.566370614359174]